Disk harrow.



No. 672,485. Patented Apr. 23, I90l. J. LINDSTRUM.

DIS K H A R ROW.

ication filed. Dec. 4, 1900 2 Shaets$heet I.

(No Model.)

IlllIIIl|IHIIQ!I]IlllllllIllIillllllIIIIHHIHWHIHIHI No. 672,485.Patented Apr. 23, l90l. J. LINDSTRDM.

DISK HARBOW.

(Application filed Dec. 4, 1900.)

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Anna tries.

UNITED JOHN LINDSTROM, OF SAN JOSE, CALIFORNIA, ASSIGNOR OFTHREE-FOURTHS TO FARMERS UNION, OF SAME PLACE.

DISK MARROW.

SPECIFICATION forming part of Letters Patent No. 672,485, dated April23, 1901. Application filed December 4, 1900. Serial No. 38.639. (Nomodel.)

To all whom it may concern: upon the standards N are the collars or Beit known that I, JOHN LINDSTROM, acitiswivels O, to which are attachedthe draftzen of the United States, residing at San Jose, rods F. Theselatter are pivotally secured at county of Santa Clara, Stateof'Oalifornia, their other ends to the lever F. This lever have inventedan Improvement in Disk Haris fulcrumed upon the horizontal piece G" at55 rows; and I hereby declare the following to f. The inner ends ofthese levers are conbe a full, clear, and exact description of thenected with a cross-head J by the links D. same. This cross-head isslidable in the guide K and My invention relates to improvements in isoperated by a lever Q. Upon this cross- I0 cultivating devices of thecharacter employhead are the braces J, by which its position 60 ingconcavoconvex disks for turning the at right angles to the line oftravel is always earth. maintained. Thus by means of the lever Q,

It consists of sets of disks or gangs sup- I am able to operate the twosets of disks or porting a framework, each gang pivoted to gangssimultaneously and have them act on this frame in such a manner as to beturnable the ground at any angle desired in relation 65 inwardly oroutwardly in relation to each to the line of travel. other, means bywhich this movement is The hounds B connect the pieces G with made,draft-rods leading from the base of the the tongue and give rigidity tothe structure. standards supporting the frame above the The value ofmaking these gangs adjust- 2o axle of each gang, whereby the draft orpull able in relation to each other is recognizable 70 is from a pointnear the axle, novel means in the working of many varieties of soils. Itfor lubricating the journals, and of details allows an immediateadaptation to cut a more fully explained in the following specibroad ora narrow furrow, as may be desired. fication and accompanying drawings.The draft-rods F connecting, as they do,

Figure 1 is a perspective of the machine. with the standards near theaxles and lead- 75 Fig. 2 is a bottom View of the machine. Fig. ing to apoint forward on the frame relieves 3 is an elevation of a standard andits conmuch of the strain usual in machines where nections. Fig. 4: is aplan of one of the gangs. the gangs are supported solely from a pointFig. 5 is a section of one of the standards. immediately above the axle.Thus added Having reference to the drawings, B repstrength is here givenand also ease of draft. 8o resents hounds or parts of a framework fromHaving thus described my invention, what which extends the pole ortongue 0. To the I claim as new, and desire to secure by Letters ends ofthe cross-beam H of this frame are Patent, issecured the horizontalpieces G, which are l. The combination of gangs of disks, pivsupportedpivotally upon the gangs A at L, otally-mounted pieces, bars andstandards de- 85 Fig. 4C. To the bar L of each of the gangs pendingtherefrom and connecting with the are secured the standards N. Thesestandgangs, draft-rods extending upwardly and ards carry the boxes P, inwhich the axle of forwardly from the lower part of the standthe disks Ais journaled. The standards ards, levers pivotaliy secured between theirhavealongitudinal central opening N, which ends and having opposite endsconnecting 90 extends through the journal-box to the axle with thedraft-rods, a slidable cross-head beand is closed by a cap M. Throughthis opentween the gangs and connections between the ing the axles arelubricated. These standcross-head and the inner ends of the levers, ardsare usually made by casting the metal and a lever and connection foroperating the about a three-fourth-inch gas-pipe, which is cross-headand simultaneously turning the 5 allowed to project sufficiently belowthe castgangs with relation to each other. ing to pass into thejournal-box. The pipe 2. The combination in acultivator of revoservesnot only as an oiling-duct, but gives luble disks arranged in gangs, thedisks of added strength to the standard. each gang having a common axle,standards Immediately above the journal-boxes and rising from theaxle-boxes and a bar connect- IOO ing the standards of each gang, ahorizontal inwardly or outwardly in relation to each piece pivotallymounted upon each of said other. 10 bars, draft-rods swiveled upon thestandards In Witness whereof I have hereunto set my at a point near thebase thereof, the levers F hand.

5 pivoted on said horizontal piece and with JOHN LINDSTROM.

which the rods connect, a cross-head and con- Witnesses: nectionstherefrom to the levers F and means 0. M. LORIGAN, for operating thecross-head to turn the gangs A. O. MATTHEW.

